Floribunda rose plant named ‘Poulcas026’

ABSTRACT

A new garden rose plant of the floribunda class which has abundant, red flowers and attractive foliage. This new and distinct variety has shown to be uniform and stable in the resulting generations from asexual propagation.

Botanical designation: Rosa hybrida.

Variety denomination: ‘Poulcas026’.

SUMMARY OF THE INVENTION

The present invention constitutes a new and distinct variety of gardenrose plant which originated from a controlled crossing between thefemale seed parent, ‘Poulgrad’, U.S. Plant Pat. No. 11,610, and the malepollen parent, an unnamed seedling.

The two parents were crossed during the summer of 1997 and the resultingseeds were planted in a controlled environment in Fredensborg, Denmark.The new variety, named ‘Poulcas026’, originated as a single seedlingfrom the stated cross.

The new variety may be distinguished from its female seed parent by thefollowing combination of characteristics:

-   -   1. The seed parent has 25 to 30 petals with no petaloids.        ‘Poulcas026’ has 26 petals total, 5 to 8 of which are petaloids.    -   2. Flowers of the seed parent have a general tonality of Red        Group 53A-46A, wile flowers of ‘Poulcas026’ are Red Group 46A to        46B.

The new variety may be distinguished from its male pollen parent by thefollowing combination of characteristics:

-   -   1. The pollen parent has more flower petals than ‘Poulcas026’.    -   2. Plants of the pollen parent are less compact than        ‘Poulcas026’.

The objective of the hybridization of this rose variety was to create anew and distinct variety for garden use with unique qualities, such as:

-   -   1. Uniform and abundant red flowers which maintain good color        for the life of the flower;    -   2. Vigorous, but compact growth when propagated both as a budded        rose and on its own roots;    -   3. Exceptional disease resistance.

This combination of qualities is not present in previously availablecommercial cultivars of this type, known to the inventor, anddistinguish ‘Poulcas026’ from all other varieties of which we are aware.

As part of the rose development program, Mogens N. Olesen germinated theseeds from the aforementioned hybridization during winter of 1997 andconducted evaluations on the resulting seedlings in a controlledenvironment in Fredensborg, Denmark. ‘Poulcas026’ was selected in thespring of 1998 by the inventor as a single plant from the progeny of theaforementioned hybridization.

Asexual reproduction of ‘Poulcas026’ by traditional budding and rootedcuttings was first done by Mogens N. Olesen in the nursery inFredensborg, Denmark in July, 1998. This initial and other subsequentasexual propagations conducted in controlled environments havedemonstrated that the characteristics of ‘Poulcas026’ are true to typeand are transmitted from one generation to the next.

BRIEF DESCRIPTION OF THE DRAWING

The accompanying color illustration shows as true as is reasonablypossible to obtain in color photographs of this type, the typicalcharacteristics of the buds, flowers, leaves, and stems, of‘Poulcas026’. Specifically illustrated in the drawing are:

FIG. 1A; Cluster of flower buds showing pedicels, peduncles,receptacles, as well as single open blossom viewed from the side;

FIG. 1B; Open flower viewed from above, as well as flower petals,detached;

FIG. 1C; Bare stem exhibiting prickles;

FIG. 1D; Sepals, receptacle, and peduncle;

FIG. 1E; Juvenile leaves;

FIG. 1F; Mature leaves.

DETAILED DESCRIPTION OF THE VARIETY

The following is a description of ‘Poulcas026’, as observed in itsgrowth in in a field nursery in Jackson County, Oreg. Observed plantsare 3 years of age, and were grown on Rosa multiflora understock. Colorreferences are made using The Royal Horticultural Society (London,England) Colour Chart, 2001, except where common terms of color areused.

For a comparison, several physical characteristics of the rose variety‘Poulzin’, U.S. Plant Pat. No. 11,626 are compared to ‘Poulcas026’ inChart 1.

CHART I ‘Poulcas026’ ‘Poulzin’ Petal Count 26 petals total, 5 to 8 ofOver 60 petals under which are petaloids normal conditions with 5-10petaloids Flower Diameter 50 to 55 mm 50 to 60 mm Color of outer RedGroup 46A to 46B with 45B with intonations petals upper occasionalstreaks of White of Red-Purple surface, upon Group 155A and Red GroupGroup 57C opening 43B

FLOWER AND FLOWER BUD

-   Blooming habit: Continuous.-   Flower bud:    -   -   Size.—Upon opening, 23 mm in length from base of receptacle            to end of bud. Bud diameter is 10 mm.        -   Bud form.—Pointed ovate.        -   Bud color.—As sepals unfold, petals are Red Group 53A.        -   Sepal inner surface.—Color: Yellow-Green Group 146C.            Surface: Medium pubescence observed.        -   Sepal outer surface.—Color: Yellow-Green Group 144A.            Anthocyanic pigments of Greyed-Red Group 180B. Texture:            Somewhat pubescent.        -   Sepal shape.—Apex: Cirrhose. Base: Flat at union with            receptacle.        -   Sepal Margin.—Margins have weak foliaceous appendages on            three of the five sepals.        -   Sepal size.—20 mm long by 7 mm wide.        -   Receptacle.—Texture: Smooth. Shape: Urn-shaped. Size: 7 mm            (h)×7 mm (w). Color: Yellow-Green Group 144A.        -   Peduncle.—Surface: Smooth. Length: 40 to 45 mm. Diameter:            Normally 3 mm. Color: Yellow-Green Group 144A and 145B.            Anthocyanic pigments of Greyed-Red Group 178A. Strength:            Somewhat strong.-   Flower bud development: Flower buds are borne singularly or in    clusters of an average of 7 flower buds per stem. Inflorescence type    is a corymb.-   Flower bloom:    -   -   Fragrance.—None.        -   Duration.—The blooms have a duration on the plant of            approximately 10 to 12 days. Petals fall cleanly away from            plant after flowers have fully matured.        -   Size.—Flower diameter is 50 to 55 mm when open. Flower depth            is 17 to 22 mm.        -   Flower shape.—Generally, flowers are shaped like a open cup            with loosely arranged petals curving outward from the            center.        -   Shape of flower, side view.—Upon opening the upper portion            is a flattened convex. The lower portion is concave. After            opening, the upper portion is a flattened convex. The lower            portion is concave.        -   Petalage.—Under normal conditions, flowers have 26 petals            total, 5 to 8 of which are petaloids.        -   Petal color.—Upon opening, outer petals Upper surface: Red            Group 46A to 46with occasional streaks of White Group 155A            and Red Group 43B. Lower surface: Red-Purple Group 58B with            intonations of Red Group 61B with occasional streaks of            Red-Purple Group 58C. Upon opening, inner petals: Upper            surface: Red Group 46A to 46B with occasional streaks of            White Group 155A and Red Group 43B. Lower surface:            Red-Purple Group 58B with intonations of Red Group 61B with            occasional streaks of Red-Purple Group 58C. Basal petal            spots, upon opening: Upper surface: Yellow Group 4A. Lower            surface: Yellow Group 4A. After opening, outer petals Upon            opening, outer petals Upper surface: Red Group 46A to 46B            with occasional streaks of White Group 155A and Red Group            43B. Lower surface: Red Group 58B with intonations of Red            Group 61B with occasional streaks of Red-Purple Group 58C.            Upon opening, inner petals: Upper surface: Red Group 46A to            46B with occasional streaks of White Group 155A and Red            Group 43B. Lower surface: Red Group 58B with intonations of            Red Group 61B with occasional steaks of Red-Purple Group            58C. Basal petal spots, after opening: Upper surface: Yellow            Group 4D to White Group 155A. Lower surface: Yellow Group 4D            to White Group 155A.-   General tonality: On open flower Red Group 46A to 46B. No change in    the general tonality at the end of the 10th day.-   Petals:    -   -   Petal reflex.—Reflexed.        -   Margin.—Entire and uniform. Occasionally there is a point or            cleft at the center of the margin.        -   Shape.—Generally narrow elliptical to broad elliptical. Apex            shape: Orbicular. Base shape: Acute.        -   Size.—Normally 25 mm (l)×20 mm (w).        -   Texture.—Smooth.        -   Thickness.—Average.        -   Arrangement.—Not Formal.-   Petaloids:    -   -   Quantity.—5 to 8.        -   Shape.—Narrow elliptical to irregular and asymmetrical.        -   Color.—Upper surface: Red Group 53A with basal petal spots            of Yellow Group 4A. Lower surface: Red Group 58B with            intonations of Red Group 61B with basal petal spots of            Yellow Group 4A.        -   Size.—Normally 8 to 12 mm (l)×10 mm (w).-   Reproductive Organs:    -   -   Pollen.—None observed.        -   Anthers.—Size: 2 mm in length. Color: Yellow-Orange Group            21A. Quantity: 120 average.        -   Filaments.—Color: Yellow Group 12A. Length: 5 mm.        -   Pistils.—Length: 5 to 6 mm. Quantity: 110.        -   Stigmas.—Superior in location relative to the length of the            filaments and the height of the anthers. Color:            Greyed-Yellow Group 162D.        -   Styles.—Color: Green-White Group 157A and Red-Purple Group            58B toward the stigma.        -   Hips.—None Observed in the field nursery in Jackson County            Oregon.

Plant

-   Plant growth: Upright to bushy. When grown as a budded field grown    plant on Rosa multiflora understock, the height of the plant is 60    to 100 cm and the average width is 75 cm.-   Stems:    -   -   Color.—Juvenile growth: Yellow-Green Group 144B. Mature            growth: Yellow-Green Group 146A.        -   Length.—On average, canes are 60 cm from the base of the            plant to the flowering portion.        -   Diameter.—Normally 6 mm.        -   Internodes.—On mature canes, there is an average distance of            30 mm between nodes.        -   Surface texture.—Young wood: Smooth. Older wood: Smooth.-   Prickles:    -   -   Incidence.—13 prickles per 10 cm of stem.        -   Size.—Average length of prickles on mature stems is 8 mm.        -   Shape.—Upper side: Flat. Lower side: Slightly concave.        -   Color.—Juvenile prickles: Yellow-Group 151A with intonations            of Yellow-Green Group 144B.-   Plant foliage: Normal number of leaflets leaves in middle of the    stem: 7 leaflets.    -   -   Compound leaf.—130 mm (l)×80 mm (w).        -   Quantity.—3 leaves per 10 cm of stem on average.        -   Color of mature foliage.—Upper side: Yellow-Green Group            147A. Lower side: Yellow-Green Group 147B.        -   Color of juvenile foliage.—Upper side: Yellow-Green Group            146B with strong anthocyanic intonations of Greyed-Purple            Group 183A. Lower side: Yellow-Green Group 146B with strong            anthocyanic intonations of Greyed-Purple Group 183A.-   Plant leaves and leaflets:    -   -   Stipules.—Size: 17 mm in length. Shape: Linear, slightly            broad based with outward extending apecies. Margins: Finely            serrated with few stipitate glands. Color: Yellow-Green            Group 146A. Anthocyanin: None observed.        -   Petiole.—Length: Normally 27 mm. Diameter: Normally 2 mm.            Upper surface: Color: Greyed-Yellow Group 160B. Lower            surface: Color: Yellow-Green Group 146B. Observations:            Prickles 2 to 3 mm in length.        -   Rachis.—Length: 65 mm. Upper surface: Color: Yellow-Green            Group 146A. Lower surface: Color: Yellow-Green Group 146B.            Observations: Prickles 2 to 3 mm in length observed.        -   Leaflet.—Edge: Serrated. Size: Average size of the terminal            leaflet on normal leaves is 40 mm in length by 35 mm wide.            Shape: Generally ovate to orbicular. Base: Rounded. Apex:            Acuminate.        -   Texture.—Smooth.        -   Thickness.—Average.        -   Arrangement.—Odd pinnate.        -   Venation.—Reticulate.        -   Glossiness.—Somewhat glossy.-   Disease resistance: Above average resistance to powdery and downy    mildew, rust, black spot, and Botrytis under normal growing    conditions in Jackson County, Oreg.-   Cold hardiness: The variety is tolerant to USDA Cold Hardiness Zone    6.-   Heat tolerance: The variety has been found to be suitable for    climate conditions found in the American Horticulture society heat    zone 7.

1. A new and distinct variety of rose plant of the floribunda rose classnamed ‘Poulcas026’, substantially as illustrated and described herein,due to its abundant red flowers, disease resistance, and extended periodof bloom.